Polymer compound and production method thereof, pigment dispersing agent, pigment dispersion composition, photocurable composition, and color filter and production method thereof

Abstract

The present invention provides a polymer compound represented by the following Formula (1) and a method for production thereof, a pigment dispersant, a pigment dispersion composition, and a photocurable composition respectively using the polymer compound, and a color filter and a method for production thereof [R1: an organic linking group having a valency of (m+n); R2: a single bond or a divalent organic linking group; A1: a monovalent organic group containing at least one moiety selected from an organic dye structure, a heterocyclic structure, an acidic group, a group having a basic nitrogen atom, a urea group, a urethane group, a group having a coordinating oxygen atom, a hydrocarbon group having 4 or more carbon atoms, an alkoxysilyl group, an epoxy group, an isocyanate group, and a hydroxyl group; m=1 to 8, n=2 to 9 (m+n=3 to 10); and P1: polymer skeleton].

Description

TECHNICAL FIELD[0001]The present invention relates to a novel polymer compound and a production method thereof, a pigment dispersing agent and pigment dispersion composition that disperses or contains a pigment together with the novel polymer compound, a pigment dispersion composition, a photocurable composition, and a color filter and a production method thereofBACKGROUND ART[0002]A color filter is produced by incorporating a polyfunctional monomer and a photopolymerization initiator, an alkali-soluble resin and other components to a pigment dispersion composition in which an organic pigment or inorganic pigment is dispersed to obtain a colored photosensitive composition, and carrying out a photolithographic method or the like using this composition.[0003]In recent years, there has been a tendency for the usage of color filters in liquid crystal display (LCD) applications to expand to television (TV) sets in addition to monitors. With this tendency towards expanded use, there has b...

AI Technical Summary

Benefits of technology

[0047]According to the present invention, a polymer compound providing excellent pigment dispersibility and dispersion stability, and a production method by which the polymer compound can be produced industrially advantageously, may be provided.

[0048]According to the invention, a pigment dispersant having high pigment dispersing property and dispersion stability may be provided.

[0049]According to the invention, a pigment dispersion composition and a colored photosensitive composition which have good color characteristics and with which excellent alkali developability and high contrast can be obtained when used for making a color filter, may be provided.

[0050]Furthermore, according to the invention, a color filter having good color characteristics and high contrast, and a method for production thereof may be provided.

Problems solved by technology

When the dispersibility is insufficient, there is a problem in that fringes (serration at the edge part) or surface unevenness occurs in the resulting colored resist film, thus causing a decrease in the chromaticity or dimensional accuracy of the color filters thus produced, or causing significant deterioration in the contrast.

Furthermore, when dispersion stability is insufficient, it is likely that problems occur in the production process for color filters, particularly in that the uniformity of the film thickness is lowered in the process of applying a colored photosensitive composition, the sensitivity to light in the exposure process is decreased, or the alkali solubility in the development process is decreased.

Furthermore, when the dispersion stability of the pigment is poor, there is a problem in that, along with the lapse of time, the constituent components of the colored photosensitive composition undergo aggregation and cause an increase in viscosity, so that the pot life becomes very short.

Accordingly, the cohesive force among the pigment particles is increased, so that it is often difficult to achieve a balance between dispersibility and dispersion stability at high level.

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